RESUMEN
The oral mucosa remains an understudied barrier tissue. This is a site of rich exposure to antigens and commensals, and a tissue susceptible to one of the most prevalent human inflammatory diseases, periodontitis. To aid in understanding tissue-specific pathophysiology, we compile a single-cell transcriptome atlas of human oral mucosa in healthy individuals and patients with periodontitis. We uncover the complex cellular landscape of oral mucosal tissues and identify epithelial and stromal cell populations with inflammatory signatures that promote antimicrobial defenses and neutrophil recruitment. Our findings link exaggerated stromal cell responsiveness with enhanced neutrophil and leukocyte infiltration in periodontitis. Our work provides a resource characterizing the role of tissue stroma in regulating mucosal tissue homeostasis and disease pathogenesis.
Asunto(s)
Inmunidad Mucosa , Mucosa Bucal/citología , Mucosa Bucal/inmunología , Neutrófilos/citología , Adulto , Células Epiteliales/citología , Regulación de la Expresión Génica , Predisposición Genética a la Enfermedad , Encía/patología , Humanos , Inflamación/inmunología , Inflamación/patología , Microbiota , Células Mieloides/citología , Periodontitis/genética , Periodontitis/inmunología , Periodontitis/patología , Análisis de la Célula Individual , Células del Estroma/citología , Linfocitos T/citologíaRESUMEN
Oral mucosal tissue is composed of several cell types that are difficult to dissociate while maintaining high cell viability. We describe a protocol for the preparation and dissociation of human buccal and gingival oral mucosal tissue to a high-viability single-cell suspension composed of heterogeneous cell types. This heterogeneous cell suspension can subsequently be used for cytometric analyses or to generate single-cell RNA sequencing libraries. For complete details on the use and execution of this protocol, please refer to Williams et al. (2021).
Asunto(s)
Mucosa Bucal/citología , Análisis de la Célula Individual/métodos , Adulto , Supervivencia Celular , Células Cultivadas , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto JovenRESUMEN
Wound healing is a complex biological process, comprised of a series of a sequential events aiming to repair injured tissue. The role of the immune system in this process is not only to recognise and combat the newly presented antigens at the site of injury, but also to participate in the debridement of the damaged area and to contribute to the process of healing. In this review, we discuss the molecules and cells of the immune system that participate in tissue repair. We describe the mechanisms of immune recognition during initial insult and the innate and adaptive immune responses to injury. Finally, we address the role of the immune system in regeneration and repair.